Motion detector and counter

  • US 5,446,775 A
  • Filed: 12/20/1993
  • Issued: 08/29/1995
  • Est. Priority Date: 12/20/1993
  • Status: Expired due to Term
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First Claim
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1. A device for detecting and counting occurrences of a specific motion, said device comprising:

  • at least one acceleration-sensitive switch;

    processing means connected to an output of said at least one acceleration-sensitive switch, for determining based on the output from said at least one acceleration-sensitive switch whether said specific motion has occurred and having means for counting occurrences of said specific motion; and

    display means controlled by the processing means to display results from said means for counting, said results being indicative of the number of times the specific motion has occurred;

    wherein said at least one acceleration-sensitive switch is uniaxial and closes in response to acceleration forces greater than a predetermined magnitude in a predetermined direction corresponding to an axis of the switch, andwherein the switch outputs a pulse when closing, the duration of the pulse depending on the amount of time that acceleration forces in the predetermined direction exceed the predetermined magnitude.

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